patch releases: yaml update
patch releases: yaml update

This updates the yaml, but kubernetes/release repo's
cmd/schedule-builder is not used to create the markdown in the prior
commits as it doesn't quite handle the phasing of information
advertising we do at the start (and end) of a release branch's lifetime.

Signed-off-by: Tim Pepper <4807564e5a18784afafcf20dbdb5591e844b9075@vmware.com>

kubernetes/sig-release